US4228217A - Lubricant for metal strip - Google Patents

Lubricant for metal strip Download PDF

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Publication number
US4228217A
US4228217A US06/031,220 US3122079A US4228217A US 4228217 A US4228217 A US 4228217A US 3122079 A US3122079 A US 3122079A US 4228217 A US4228217 A US 4228217A
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Prior art keywords
lubricant
metal strip
aluminum
stearate
monocarboxylic acid
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Rudolf Baur
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Alcan Holdings Switzerland AG
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Schweizerische Aluminium AG
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/22—Carboxylic acids or their salts
    • C10M105/24—Carboxylic acids or their salts having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/286—Esters of polymerised unsaturated acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/06—Groups 3 or 13
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/242—Hot working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/243—Cold working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31714—Next to natural gum, natural oil, rosin, lac or wax
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/8305—Miscellaneous [e.g., treated surfaces, etc.]

Definitions

  • the invention concerns a lubricant for metal strip, in particular for blank and painted strips made of aluminum or aluminum alloys and used for packaging, in particular for the packaging of foodstuffs.
  • Containers which can be used in the packaging of foodstuffs and the like, can be produced in a conventional manner by deep drawing material such as aluminum strip which is generally blank or painted before this operation.
  • deep drawing material such as aluminum strip which is generally blank or painted before this operation.
  • the surface of the strip must exhibit good slip properties.
  • Depositing a lubricant on the surface of the strip in one of the production steps (after painting for instance) produces the desired effects.
  • the surfaces bearing a lubricant must meet the following requirements:
  • the lubricant must not give off any odor.
  • the blank or painted thin strip product bearing the lubricant must not give off any odor when heated. In other words, the lubricant must exhibit thermal stability.
  • the coating of lubricant on baked lacquer coated strip may alter the thermal sealing characteristics only to a controllable degree.
  • the lubricant must not react with lacquer coatings and must not cause swelling or dissolution of lacquer coatings.
  • the components making up the lubricant must be in full accordance with the laws concerning foodstuffs.
  • the inventor has developed the surface lubricant of the present invention which satisfies the above-listed requirements.
  • the lubricant of the present invention exhibits no toxic effects and thus enjoys the approval of the laws covering foodstuffs.
  • the lubricant of the present invention achieves the foregoing objectives and contains the aluminum or magnesium salt of a saturated C 11 to C 19 monocarboxylic acid as its main constituent.
  • the aluminum or magnesium monocarboxylic acid salt is preferably aluminum stearate or magnesium di-stearate. In most cases, it has been found necessary to have in the constitution of the lubricant a minimum of 60% aluminum or magnesium monocarboxylic acid salt.
  • Both monocarboxylic acid salts can thus be used in any mixed ratio desired. Using basically the following mixtures (weight %), however, has been found most advantageous for lubricants:
  • mixtures of aluminum and magnesium monocarboxylic acid salts affect the lubricating properties of the main component of the lubricant of the invention only insignificantly.
  • the same monocarboxylic acid, stearic acid for example is employed for the main constituent of the lubricant as for the application agent; however, mixtures such as the following can also be used:
  • magnesium di-stearate as the main constituent of the lubricant and aluminum tri-laurate as the application agent.
  • the metal strip intended for packaging purposes is, in many cases, coated with lubricant immediately after the lacquering.
  • lubricant of the present invention could be deposited on the surface of the strip from a solution or a dispersion from an aliphatic solvent such as is normally used in lacquering technology, n-hexane, for instance.
  • This requirement causes difficulties in that neither the magnesium or aluminum salts of long chain monocarboxylic acids nor a mixture of both are soluble or dispersible in large quantities in aliphatic solvents.
  • a further application agent namely, a dispersion agent.
  • the following classes of substances have proved of value as dispersion agents.
  • esters of a methyl or ethyl alcohol with a C 11 to C 17 monocarboxylic acid esters of a methyl or ethyl alcohol with a C 11 to C 17 monocarboxylic acid
  • esters of a C 3 to C 6 alcohol with a saturated C 11 to C 17 monocarboxylic acid esters of a C 3 to C 6 alcohol with a saturated C 11 to C 17 monocarboxylic acid
  • esters of an aliphatic C 1 to C 6 alcohol with a ⁇ -oxymonocarboxylic acid are esters of an aliphatic C 1 to C 6 alcohol with a ⁇ -oxymonocarboxylic acid.
  • the methyl and ethyl esters of the C 11 to C 17 monocarboxylic acids, particularly lauric acid, have proven especially useful.
  • Table IA presents examples of the compositions of two lubricants conforming to the present invention.
  • the listed substances in Table IA aluminum tri-stearate, magnesium di-stearate and methyl palmitate, can be replaced by other members of their groups of substances in accordance with the present invention as shown in Table IB.
  • Liquid aliphatic hydrocarbons in particular n-hexane, which are often used as solvents in lacquer technology, have been found to be particularly suitable for the preparation of dispersions of the lubricant of the present invention.
  • This solvent boils at 69° C. gives off almost no odor and, in particular in coats of lacquer, causes no microscopic brittle cracks as can be observed in many cases when aliphatic alcohols or aliphatic ketones are used as solvents.
  • the amounts of n-hexane taken up by the lacquer during the coating of the lacquered strip with the lubricant of the present invention are small and are to a large extent evaporated off by the subsequent drying.
  • the residual amount of solvent hardly affects the lacquer coating.
  • aliphatic alcohols or ketones can also be used. Their use, though, is preferably limited to the treatment of blank strip since they, as mentioned above, can cause microscopic brittle cracks in the lacquer.
  • exceptionally stable dispersions can be formed in aliphatic solvents. Some dispersions tend to settle as a precipitate to a certain degree after standing for a while. In these substances, the precipitated particles of the metal salts of long chain monocarboxylic acids can be immediately agitated into suspension again by means of only the slightest amount of stirring.
  • dispersion agents have been found to a certain degree to cause unpleasant odors on heating (e.g., baking) lubricants, in particular those intended for food packaging. These odors are partly due to impurities in the dispersion agent. Therefore, it is extremely important to use dispersion agents which are at least of the grade "purified" in the preparation of lubricants for foodstuff packaging.
  • Lubricants containing methyl and ethyl esters of the saturated C 11 to C 17 monocarboxylic acids, either individually or mixtures thereof, have been shown to be particularly suitable for foodstuff packaging.
  • the preferred dispersion agent is methyl palmitate.
  • Substances of the rest of the classes of such chemicals can be more usefully employed for packaging strip used for applications other than the packaging of foodstuffs.
  • Table II shows a typical and particularly useful composition of a dispersion agent for the surface lubricant of the invention.
  • Such a dispersion exhibits excellent stability even after standing for several months, displaying only very slight precipitation.
  • a further similarly advantageous composition of the dispersion in accordance with the present invention can be obtained when the concentration ranges in Table II for aluminum tri-stearate and magnesium di-stearate are reversed.
  • dispersion agents which represent a component of the lubricant on the metal strip after drying, also exhibit a certain degree of lubrication. With these agents, however, the degree of lubrication is not as pronounced as that of the aluminum and magnesium monocarboxylic acid salts. Furthermore, this property may lessen in the course of time due to oxidation of the dispersion agent. In extreme cases, in particular with triglycerides, oxidation of the dispersion agent can result in the conversion of the lubricant into a sticky film which makes the sheet coated with the substance unusable.
  • the duration that is, the period of time which these lubricants containing oxidation sensitive dispersion agents are allowed to stand, can be extended by the addition of at least one further additive, a so called oxidation inhibitor.
  • a so called oxidation inhibitor Such alterations have been so successful that these oxidation sensitive dispersion agents can also be employed on an industrial scale.
  • the oxidation inhibitors are usefully added in quantities equal to that of the dispersion agent.
  • compositions of lubricants in which the concentration of oxidation inhibitors is larger or smaller than that of the dispersion agent. Such compositions are not only usable but, in some cases, are even advantageous. Palmitoyl ascorbate is one such oxidation inhibitor.
  • the dispersion can be prepared by adding the components of the lubricant, i.e., the aluminum and magnesium monocarboxylic salts, the dispersion agent and the anti-oxidation agent to a solvent. The resulting mixture is then heated for a long period of time, such as 6 to 8 hours, in a reflux apparatus in such a way that the solvent boils continuously. A milk white dispersion of swollen metal stearate particles in the solvent results. In extreme cases, such as when employing special dispersion agents, a solution may be obtained.
  • the deposition of the lubricant on the surface of the strip can take place using the usual methods and equipment employed in lacquer technology. Processes and devices for immersion coating or varnishing have been found to be favorable for this purpose.
  • the packaging strip is, by way of preference, coated on both sides with the lubricant of the invention.
  • the packaging industry usually employs aluminum and its alloys in the form of strip which can be coated on one or both sides with lacquer or else laminated with another material.
  • the thickness of these aluminum or aluminum alloy strips varies, depending on the application, from 10 to 250 ⁇ m.
  • the thickness of the lacquer or laminate coating of one or, if desired, both sides of the strip is preferably between 1 and 100 ⁇ m.
  • each side receives between 10 and 150 mg/m 2 . If the strip is to be used for the packaging of foodstuffs, then the appropriate legal specifications must be taken into account when determining the amount of lubricant to be deposited.
  • the lubricant of the invention When used on blank and lacquered strip material, the lubricant of the invention satisfies all the requirements set by the packing industry, in particular:
  • Deep drawn packaging containers made from lacquered or laminated aluminum strip, coated with the lubricant according to the present invention can be sealed tight with a lid in the normal manner by means of heat sealing.
  • This process differs from sealing done with conventional paraffin oil based lubricants only in that in certain cases it requires a slightly higher sealing temperature to achieve airtight sealing of the package. This requirement can be met on industrial packaging machines simply by raising the temperature and without any kind of difficulty arising and without incurring any disadvantage.
  • FIGS. 1 and 2 show schematically two devices which are particularly favorable for applying the lubricant of the invention to strip material.
  • FIG. 1 shows a device comprising an uncoiling roll 1, a container 2 holding the dispersion, squeeze rolls 3, drying tunnel 4 with an exhaust pipe fitted with a fan to draw off the solvent vapor 5, circular knife-edge with backing 6 and a spool 7 on which the strip, coated with lubricant and trimmed, is coiled.
  • the quantity of lubricant deposited on the strip can be regulated by means of the squeeze rolls, one of which is made of steel, the other of rubber, fitted with facilities for pneumatic or mechanical adjustment of the pressure between them.
  • the temperature in the drying tunnel is about 80° C.
  • FIG. 2 shows schematically a conventional lacquering device which has also been found to be particularly suitable for coating strip material with the lubricant of the present invention.
  • the device comprises an uncoiling roll 1, a bath 2 containing the dispersion, squeeze rolls 3, drying tunnel 4 with exhaust pipe and fan 5, and a roll 6 for coiling the strip which has been coated on both sides.
  • the squeeze rolls 3 are preferably made of steel and/or rubber and the temperature in the drying tunnel is preferably around 80° C. when using n-hexane as the solvent.
  • the squeeze rolls 3 are also provided with facilities for adjusting them mechanically. Thus, the amount of lubricant deposited on the sheet can be controlled.
  • a controlled amount of said lubricant can be applied to both sides of said strip by passing said strip through a bath of said lubricant to provide a lubricant coated strip and thereafter passing said lubricant coated strip through squeeze rolls to regulate the amount of lubricant remaining on said strip.
  • the manner of testing was that 5.5 g of lubricant was added together with a specific amount of dispersion agent to 94.5 g n-hexane, and the resulting mixture boiled for 7 hours in a reflux apparatus.
  • the stability of the dispersion is arbitrarily defined as follows:
  • a stability of 100% means that the dispersion did not change during the entire test period.
  • a stability of 70% means that 30 vol.% comprised clear n-hexane above the dispersion.
  • a stability of 0% indicates that the dispersion has settled out in precipitate form.
  • Table III shows that adequate lubrication can be achieved with all the dispersion agents, the amount of dispersion agent present being of no great significance.
  • the degree of lubrication is classified in Table III as:
  • the lubricant of the above composition was boiled for 7 hours in a reflux apparatus in 93 wt % n-hexane as was already described earlier.
  • Table IV shows that the lubricant of the present invention containing methyl palmitate as dispersion agent complies with the legal requirements, when the coating on the strip coming into contact with the contents exceeds a value of around 100 mg/m 2 /side.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)
  • Paints Or Removers (AREA)
  • Wrappers (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
US06/031,220 1977-09-06 1979-04-18 Lubricant for metal strip Expired - Lifetime US4228217A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH10845/77 1977-09-06
CH1084577A CH633039A5 (de) 1977-09-06 1977-09-06 Oberflaechengleitmittel fuer metallbaender.

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US05/936,828 Division US4193881A (en) 1978-09-06 1978-08-25 Lubricant for metal strip

Publications (1)

Publication Number Publication Date
US4228217A true US4228217A (en) 1980-10-14

Family

ID=4367428

Family Applications (1)

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US06/031,220 Expired - Lifetime US4228217A (en) 1977-09-06 1979-04-18 Lubricant for metal strip

Country Status (13)

Country Link
US (1) US4228217A (da)
AT (1) AT366408B (da)
BE (1) BE870259A (da)
CA (1) CA1120460A (da)
CH (1) CH633039A5 (da)
DE (1) DE2742290C3 (da)
DK (1) DK154570C (da)
FR (1) FR2401985A1 (da)
GB (1) GB2003924B (da)
IT (1) IT1098553B (da)
NL (1) NL7809079A (da)
NO (1) NO153323C (da)
SE (1) SE443575B (da)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867892A (en) * 1987-12-28 1989-09-19 Exxon Research And Engineering Company Antiwear additives for lubricating oils
US4928508A (en) * 1986-05-30 1990-05-29 Alcan International Limited Method of forming prelubricated finstock
US5064547A (en) * 1990-09-12 1991-11-12 Century Laboratories, Incoporated Lubricant compositions for metals containing dicarboxylic acids as a major constituent
US5249446A (en) * 1991-07-19 1993-10-05 Aluminum Company Of America Process for making an aluminum alloy finstock lubricated by a water-microemulsifiable composition
US5286300A (en) * 1991-02-13 1994-02-15 Man-Gill Chemical Company Rinse aid and lubricant
US6004911A (en) * 1995-12-27 1999-12-21 Denso Corporation Processing oil suitable for aluminum materials and removable via heating
CN100535162C (zh) * 2007-06-27 2009-09-02 西安建筑科技大学 碳化钨颗粒增强钢/铁基复合耐磨板材及其制备工艺
CN102352507A (zh) * 2011-10-26 2012-02-15 西安建筑科技大学 一种铸铁板的合金碳化物表面强化工艺

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD210526A3 (de) * 1981-07-09 1984-06-13 Adw Ddr Verfahren zum ein- oder mehrstufigen ziehen von metallischem umformgut
DD210525A3 (de) * 1981-07-09 1984-06-13 Adw Ddr Verfahren zur herstellung von ferritischem heizleiterdraht
DD210524A3 (de) * 1981-07-09 1984-06-13 Adw Ddr Verfahren zum mehrstufigen ziehen
DE4408104A1 (de) * 1994-03-10 1995-09-14 Baerlocher Gmbh Magnesiumstearat-Dispersion

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266544A (en) * 1938-11-18 1941-12-16 Union Oil Co Magnesium and aluminum soap grease
US2489300A (en) * 1946-10-25 1949-11-29 California Research Corp Lubricants and the like
US2525984A (en) * 1946-04-19 1950-10-17 Weston Charles Clark Pattern composition
US3392117A (en) * 1966-05-02 1968-07-09 Hooker Chemical Corp Lubricant composition and method
US3519571A (en) * 1966-03-29 1970-07-07 Hoesch Chemie Gmbh Process for preparing metal soap mixtures
US3914519A (en) * 1966-06-01 1975-10-21 Amchem Prod Process and composition for coating metals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2012009C3 (de) * 1970-03-13 1975-04-30 Kufner Textilwerke Kg, 8000 Muenchen Beschichten flexibler Flächengebilde nach dem Pulverdruckverfahren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266544A (en) * 1938-11-18 1941-12-16 Union Oil Co Magnesium and aluminum soap grease
US2525984A (en) * 1946-04-19 1950-10-17 Weston Charles Clark Pattern composition
US2489300A (en) * 1946-10-25 1949-11-29 California Research Corp Lubricants and the like
US3519571A (en) * 1966-03-29 1970-07-07 Hoesch Chemie Gmbh Process for preparing metal soap mixtures
US3392117A (en) * 1966-05-02 1968-07-09 Hooker Chemical Corp Lubricant composition and method
US3914519A (en) * 1966-06-01 1975-10-21 Amchem Prod Process and composition for coating metals

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928508A (en) * 1986-05-30 1990-05-29 Alcan International Limited Method of forming prelubricated finstock
US4867892A (en) * 1987-12-28 1989-09-19 Exxon Research And Engineering Company Antiwear additives for lubricating oils
US5064547A (en) * 1990-09-12 1991-11-12 Century Laboratories, Incoporated Lubricant compositions for metals containing dicarboxylic acids as a major constituent
US5286300A (en) * 1991-02-13 1994-02-15 Man-Gill Chemical Company Rinse aid and lubricant
US5249446A (en) * 1991-07-19 1993-10-05 Aluminum Company Of America Process for making an aluminum alloy finstock lubricated by a water-microemulsifiable composition
US6004911A (en) * 1995-12-27 1999-12-21 Denso Corporation Processing oil suitable for aluminum materials and removable via heating
CN100535162C (zh) * 2007-06-27 2009-09-02 西安建筑科技大学 碳化钨颗粒增强钢/铁基复合耐磨板材及其制备工艺
CN102352507A (zh) * 2011-10-26 2012-02-15 西安建筑科技大学 一种铸铁板的合金碳化物表面强化工艺

Also Published As

Publication number Publication date
GB2003924B (en) 1982-04-28
DE2742290A1 (de) 1979-03-08
FR2401985A1 (fr) 1979-03-30
DE2742290B2 (de) 1981-04-16
NO153323B (no) 1985-11-18
GB2003924A (en) 1979-03-21
BE870259A (fr) 1979-03-06
FR2401985B1 (da) 1982-04-02
NO783008L (no) 1979-03-07
ATA642378A (de) 1981-08-15
DK390478A (da) 1979-03-07
CH633039A5 (de) 1982-11-15
SE7809317L (sv) 1979-03-07
NO153323C (no) 1986-02-26
DE2742290C3 (de) 1988-05-26
NL7809079A (nl) 1979-03-08
IT7827378A0 (it) 1978-09-06
DK154570B (da) 1988-11-28
AT366408B (de) 1982-04-13
DK154570C (da) 1989-04-17
IT1098553B (it) 1985-09-07
SE443575B (sv) 1986-03-03
CA1120460A (en) 1982-03-23

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